1. What is Inglis' Formula?

Inglis' Formula is used to calculate rainfall depth in centimeters for ghat areas based on runoff depth. It provides a method to estimate the vertical accumulation of rainwater over a specific area during a given time period.

2. How Does the Calculator Work?

The calculator uses Inglis' formula:

Where:

• \( PIC \) — Rainfall Depth in CM for Inglis' Formula (cm)
• \( RIC \) — Runoff Depth in CM for Inglis' Formula (cm)

Explanation: The formula calculates rainfall depth by adding 30.5 to the runoff depth and dividing the result by 0.85.

3. Importance of Rainfall Depth Calculation

Details: Accurate rainfall depth estimation is crucial for hydrological studies, water resource management, flood prediction, and agricultural planning in ghat areas.

4. Using the Calculator

Tips: Enter runoff depth in centimeters. The value must be valid (≥ 0).

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between rainfall depth and runoff depth?
A: Rainfall depth refers to the total precipitation that falls, while runoff depth is the portion that flows over the land surface into water bodies.

Q2: Why is this formula specific to ghat areas?
A: Ghat areas have unique topographic and hydrological characteristics that require specialized formulas for accurate rainfall-runoff relationships.

Q3: What are typical values for runoff depth in ghat areas?
A: Runoff depth varies significantly based on rainfall intensity, soil type, vegetation cover, and slope, but typically ranges from 0-50 cm.

Q4: Are there limitations to Inglis' formula?
A: The formula provides estimates and may need adjustment for specific local conditions, extreme weather events, or changing land use patterns.

Q5: How often should rainfall measurements be taken?
A: Regular measurements during rainy seasons are recommended, with more frequent readings during intense rainfall events for better accuracy.